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A circle perhaps?
A closed figure, like a circle or triangle, begins and ends at the same point.
If the sides of the triangle are equal in length to the radius of the circle, then you can simply place the two ends of the hypotenuse on the perimeter of the circle, and it's remaining corner will lie at the circle's center.
Draw a circle erese 2 ends and make a kind of curved triangle
Headlines - Friendship Never Ends - was created on 2007-11-05.
A Girl Scout Friendship Circle is formed by standing in a circle, putting right hands over left hands, and holding hands with the people on either side. If done correctly, the Girl Scouts in the circle should be able to turn and face outside without breaking the circle. A Friendship Circle represents the unbroken chain of friendship of Girl Guides and Girl Scouts around the world. Many troops use the Girl Scout Friendship Circle to close their troop meetings. They can also share the Friendship Squeeze and sing a song, usually "Make New Friends". As the meeting ends, they turn the circle out and then leave.
friendship, championship,
To construct a right triangle given the radius of the circumscribed circle and the length of a leg, begin with two ideas. First, the diameter of the circle is equal to twice the radius. That's pretty easy. Second, the diameter of the circle is the length of the hypotenuse. The latter is a key to construction. Draw your circle, and draw in a diameter, which is the hypotenuse of the right triangle, as was stated. Now set you compass for the length of the leg of the triangle. With this set, place the point of the compass on one end of the diameter (the hypotenuse of your triangle), and draw an arc through the circumference of the circle. The point on the curve of the circle where the arc intersects it will be a vertex of your right triangle. All that remains is to add the two legs or sides of the triangle. Draw in line segments from each end of the hypotenuse (that diameter) to the point where your arc intersected the curve of the circle. You've constructed your right triangle. Note that any pair of lines that is drawn from the ends of the diameter of a circle to a point on the curve of the circle will create a right triangle.
There are no ends to a circle. A chord connects 2 ends of an arc though.
Because in effect an isosceles triangle has been constructed and the base angles are always equal.
Do you mean making the circumference of the circle equal to the perimeter of a square? This is a experimental method: 1) Make a square with marbles in beach-sand, say 10x10=100 marbles (150mm x 150 mm) 2) take a band or string and put it around the square = 400 marble distances (600 mm) 3) tie the two ends of the string together (or paste the ends of the band) 4) put the string or band on a flat surface and fill it with marbles till the shape is round The circle has the length of the square!
Any polygon or a circle (it is contested whether a circle is a polygon with infinite sides) Answer 2: You could have just said circle. Answer 3: Yes - I could have - but then that would have missed out every "other" polygon - such as triangle, quadrilateral, pentagon, etc